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  1. I haven't read the whole thread yet, but I wanted to add that ringing is more related to the friction of the molten plastic coming out of the nozzle, than to loose belts. the "tighten your belts" paradigm can only be taken so far, and by now I am convinced that users are actually over-tightening the belts, instead of looking elsewhere for a problem. the XY carriage is relatively solid, some play in the system, but not too much. the print bed on the other hand, is one of the flimsiest constructions, in other words, the print head makes the print and the bed ring, not the other way around. wo
  2. I thought I outlined all the info at http://umforum.ultimaker.com/index.php?/topic/1925-modification-to-the-hot-end-for-abs-printing/ let me know if something is left unclear in that post. The silicone foam limits the heat bleeding from the alu into the air, keeping the temp more stable, and lessening the cooling effect the fan has on the heater. you know, insulation.
  3. If you modify the hot end a bit, to limit the heat reaching up into the PEEK, you can go to 270-280 C (after FW mod):
  4. Cool, you made a device that grinds up the filament for recycling?
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